JPH0533256A - Production of fibrous sheet-like material - Google Patents
Production of fibrous sheet-like materialInfo
- Publication number
- JPH0533256A JPH0533256A JP20756191A JP20756191A JPH0533256A JP H0533256 A JPH0533256 A JP H0533256A JP 20756191 A JP20756191 A JP 20756191A JP 20756191 A JP20756191 A JP 20756191A JP H0533256 A JPH0533256 A JP H0533256A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- water
- soluble polymer
- degree
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、繊維集合体に高分子弾
性体を含有した柔軟な人工皮革等の製造方法に関する。
更に詳しくは、繊維集合体に高分子弾性体を含浸すると
きの繊維集合体の仮固定法の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a flexible artificial leather or the like in which a polymeric elastic body is contained in a fiber assembly.
More specifically, the present invention relates to an improvement in a method of temporarily fixing a fiber assembly when the fiber assembly is impregnated with a polymer elastic material.
【０００２】[0002]
【従来の技術】従来、人工皮革等に用いられる不織布や
編織物等の繊維集合体に高分子弾性体を含有した繊維シ
ート状物の製造方法において、高分子弾性体を含浸する
ときの繊維シート状物の形態変化を防止するために水溶
性高分子等を付与して繊維集合体を仮固定した状態で高
分子弾性体を含浸、凝固し、次いで該水溶性高分子を溶
解除去することはよく知られた技術である。2. Description of the Related Art Conventionally, in a method for producing a fibrous sheet-like material containing a polymer elastic material in a fiber assembly such as a nonwoven fabric or knitted fabric used for artificial leather, etc., the fiber sheet when impregnated with the polymer elastic material. In order to prevent the morphological change of the particulate matter, it is possible to impregnate the polymer elastic body with the water-soluble polymer or the like temporarily fixed to the fiber assembly, coagulate it, and then dissolve and remove the water-soluble polymer. This is a well-known technique.
【０００３】例えば、繊維集合体に水溶性高分子を付与
し圧縮成形した後高分子弾性体を含浸、凝固する方法が
特公昭45−18745号公報、特公昭48−11928号公報、特公
昭51−7721号公報、特公昭51−32681号公報等に記載さ
れている。これらの方法において使用される水溶性高分
子としてはポリビニルアルコール、澱粉、カルボキシメ
チルセルロース等が例示されている。For example, a method in which a water-soluble polymer is applied to a fiber aggregate, compression molding is performed, and then a polymer elastic body is impregnated and coagulated is disclosed in JP-B-45-18745, JP-B-48-11928 and JP-B-51. -7721 and Japanese Patent Publication No. 51-32681. Examples of water-soluble polymers used in these methods include polyvinyl alcohol, starch, carboxymethyl cellulose and the like.
【０００４】これら水溶性高分子を付与することによっ
て、高分子弾性体を含浸、凝固するときの繊維集合体の
形態安定性を維持することと共に、繊維表面を水溶性高
分子で被覆することにより繊維と高分子弾性体とが接着
することを防止し、より柔軟な風合いが得られることが
知られている。By imparting these water-soluble polymers, by maintaining the morphological stability of the fiber aggregate when impregnating and solidifying the polymer elastic body, and by coating the fiber surface with the water-soluble polymer. It is known that the fibers and the polymeric elastic body are prevented from adhering to each other and a softer texture can be obtained.
【０００５】[0005]
【発明が解決しようとする課題】従来用いられていた水
溶性高分子は、代表的な高分子弾性体のポリウレタンの
溶剤であるジメチルホルムアミドに対して形態安定性が
不十分であったり、高分子弾性体の凝固完了前に凝固液
（主として水）に溶け出して形態変化を起こし易かった
り、乾燥時のマイグレーションが大きく繊維集合体の中
心部においては繊維表面を水溶性高分子が覆っておら
ず、その結果、得られる繊維シート状物の風合いが固い
ものとなる等の問題点があった。Conventionally used water-soluble polymers have insufficient morphological stability against dimethylformamide, which is a solvent for polyurethane, which is a typical polymer elastomer, and Before the completion of solidification of the elastic body, it easily dissolves in the coagulation liquid (mainly water) to cause a morphological change, or migration during drying is large, and the fiber surface is not covered with the water-soluble polymer in the central part of the fiber assembly. As a result, there has been a problem that the texture of the obtained fibrous sheet material becomes hard.
【０００６】このような問題を解決するために水溶性高
分子の付着量を増大させると乾燥時のマイグレーション
が更に大きくなり繊維集合体の表面のみに強固な被膜を
形成し易くなり、また、後工程での水溶性高分子の溶解
除去に多量の温水を必要とする等の問題を生ずる。When the amount of the water-soluble polymer attached is increased to solve such a problem, migration during drying is further increased, and a strong coating film is easily formed only on the surface of the fiber assembly. There arises a problem that a large amount of warm water is required for dissolving and removing the water-soluble polymer in the process.
【０００７】本発明はこれらの問題を解決した、比較的
少量の付与でジメチルホルムアミドや凝固液中での形態
保持性が高く、後工程での溶解除去が容易でかつ乾燥時
のマイグレーションが小さく柔軟な繊維シート状物の得
られる繊維集合体の水溶性高分子による仮固定方法を提
供するものである。The present invention has solved these problems and has a high shape retention in dimethylformamide and a coagulating liquid by applying a relatively small amount, is easy to dissolve and remove in a subsequent step, and is small in migration during drying and flexible. Another object of the present invention is to provide a method for temporarily fixing a fiber assembly obtained from another fiber sheet-like product with a water-soluble polymer.
【０００８】[0008]
【課題を解決するための手段】本発明は、繊維集合体に
水溶性高分子を付与して仮固定し高分子弾性体を含浸し
凝固した後に該水溶性高分子を溶解除去する繊維シート
状物の製造方法において、該水溶性高分子として重合度
2000以上、ケン化度80モル％以上97％以下のポリビニル
アルコールを用いることを特徴とする繊維シート状物の
製造方法である。DISCLOSURE OF THE INVENTION The present invention provides a fibrous sheet form in which a water-soluble polymer is applied to a fiber assembly, temporarily fixed, impregnated with a polymer elastic body, coagulated, and then the water-soluble polymer is dissolved and removed. In the method for producing a product, the degree of polymerization of the water-soluble polymer is
A method for producing a fibrous sheet, which comprises using polyvinyl alcohol having a saponification degree of 2,000 or more and 80 mol% or more and 97% or less.
【０００９】[0009]
【作用】本発明で使用する繊維集合体は、従来から繊維
シート状物の製造に用いられている不織布や編織物は全
て特に制限なく用いられる。不織布には補強用等の目的
で編織物等が内部または表面に積層されたものでも良
く、構成繊維は溶剤処理等により繊維成分の一部を除去
することにより極細繊維とするものであっても良く、ま
た通常の繊維であっても良い。通常の繊維の場合には、
本発明により高分子弾性体が繊維と接着することを阻害
する効果が高いため、従来よりもより柔軟な風合いのも
のが得られる。In the fiber assembly used in the present invention, all the non-woven fabrics and knitted fabrics conventionally used for producing fibrous sheet materials can be used without particular limitation. The non-woven fabric may be one in which a knitted fabric or the like is laminated inside or on the surface for the purpose of reinforcement or the like, and the constituent fibers may be extra fine fibers by removing a part of the fiber component by solvent treatment or the like. It may be a normal fiber. For regular fibers,
According to the present invention, the effect of inhibiting the polymer elastic body from adhering to the fiber is high, so that a softer texture than before can be obtained.
【００１０】本発明において用いるポリビニルアルコー
ルは、重合度が2000以上、好ましくは2000以上5000以
下、更に好ましくは2400以上4000以下のものである。重
合度が2000未満であると、乾燥時のマイグレーションが
大きく、また、ジメチルホルムアミドや凝固液に対する
安定性が不十分である。重合度が大きくなると、温水に
対する溶解速度が小さくなり、溶解除去に多大の費用が
かかることとなり工業生産上不利となる。なお、本発明
で重合度は比粘度（ηsp）が0.4〜0.8となるような濃度
のポリビニルアルコール水溶液を用いてＪＩＳ Ｋ−６
７２６の方法で測定したものである。The polyvinyl alcohol used in the present invention has a degree of polymerization of 2000 or more, preferably 2000 or more and 5000 or less, and more preferably 2400 or more and 4000 or less. When the degree of polymerization is less than 2000, migration during drying is large, and stability to dimethylformamide and a coagulating liquid is insufficient. When the degree of polymerization is high, the dissolution rate in hot water is low, which requires a great deal of cost for dissolution and removal, which is disadvantageous in industrial production. In the present invention, the degree of polymerization is determined according to JIS K-6 using an aqueous polyvinyl alcohol solution having a specific viscosity (η sp ) of 0.4 to 0.8.
It is measured by the method of 726.
【００１１】本発明で用いるポリビニルアルコールのケ
ン化度は80モル％以上97モル％以下である。ケン化度が
80モル％未満であるとジメチルホルムアミド中での繊維
集合体の形態安定化効果が十分でなく、ポリウレタン溶
液含浸時のローラープレス等による圧縮変形等に対する
形態維持が十分できなかったり、また、高分子弾性体の
凝固工程において凝固完了前に凝固液中に溶出し易い。
ケン化度が97モル％以上であると温水に対する溶解性が
低下し、高分子弾性体凝固後の溶解除去が不十分となり
繊維シート状物の風合いが固くなる。従って、ケン化度
は80モル％以上97モル％以下である必要があるが、実際
の使用に当たっては、高分子弾性体の含浸、凝固条件や
水溶性高分子の溶解除去条件等の組み合わせによってポ
リビニルアルコールの重合度とケン化度の組み合わせを
選択することが望ましい。The saponification degree of the polyvinyl alcohol used in the present invention is 80 mol% or more and 97 mol% or less. Saponification degree
If it is less than 80 mol%, the morphological stabilization effect of the fiber aggregate in dimethylformamide is not sufficient, and the morphology cannot be sufficiently maintained against compression deformation due to roller press etc. when impregnating the polyurethane solution, and the polymer is In the solidifying step of the elastic body, it is likely to be eluted into the solidifying solution before the solidification is completed.
When the degree of saponification is 97 mol% or more, the solubility in hot water is reduced, and the dissolution and removal after the solidification of the polymeric elastomer is insufficient, so that the texture of the fibrous sheet becomes hard. Therefore, the degree of saponification must be 80 mol% or more and 97 mol% or less, but in actual use, polyvinyl polyvinyl chloride can be used in combination with impregnation of the elastic polymer, coagulation conditions, dissolution removal conditions of the water-soluble polymer, etc. It is desirable to select a combination of the degree of polymerization of alcohol and the degree of saponification.
【００１２】高分子弾性体の凝固温度を比較的高くする
場合には、溶解温度の比較的高いポリビニルアルコー
ル、即ちケン化度の比較的高いポリビニルアルコールを
用いる。この場合、重合度が共に高いと溶解速度が遅く
なり溶解温度等の溶解除去条件を強くする必要があり、
乾燥時のマイグレーションを満足する範囲内で重合度が
低いことが好ましい。高分子弾性体の凝固温度を低くす
る場合にはポリビニルアルコールの溶解温度も比較的低
くても良く、ケン化度の低いポリビニルアルコールが使
用できる。この場合重合度は特に小さくする必要はな
く、上記の範囲内で任意に選ばれる。When the solidification temperature of the elastic polymer is relatively high, polyvinyl alcohol having a relatively high melting temperature, that is, polyvinyl alcohol having a relatively high saponification degree is used. In this case, if the degree of polymerization is both high, the dissolution rate will be slow and it will be necessary to strengthen the dissolution removal conditions such as the dissolution temperature.
It is preferable that the degree of polymerization is low within a range that satisfies migration during drying. When lowering the solidification temperature of the elastic polymer, the dissolution temperature of polyvinyl alcohol may be relatively low, and polyvinyl alcohol having a low saponification degree can be used. In this case, the degree of polymerization does not have to be particularly small and is arbitrarily selected within the above range.
【００１３】ポリビニルアルコールは前記の繊維集合体
に水溶液として付与し乾燥する。ポリビニルアルコール
水溶液の濃度は含浸時の粘度、繊維集合体の含浸のし易
さ、ポリビニルアルコールの目標とする付着量等によっ
ても異なり一概には言えないが、通常20％以下、好まし
くは５〜15％の濃度が一応の目安となる。本発明のポリ
ビニルアルコールは乾燥時のマイグレーションが小さ
く、比較的低付着量で効果を奏するが、ポリビニルアル
コールの付着量は固形分で通常１〜20重量％、好ましく
は５〜15重量％の範囲である。付着量が少ないと十分な
形態安定性が得られず、また、多いと十分に溶解除去が
行いにくく更に廃液の処理等の点からも不経済である。
ポリビニルアルコールの乾燥条件は特に限定されない
が、必要以上に強い条件で乾燥するとポリビニルアルコ
ールが乾熱処理されることにより溶解性が低下し溶解除
去が不十分となる場合があるので注意する必要がある。Polyvinyl alcohol is applied as an aqueous solution to the above fiber assembly and dried. The concentration of the polyvinyl alcohol aqueous solution varies depending on the viscosity at the time of impregnation, the easiness of impregnation of the fiber assembly, the target amount of polyvinyl alcohol, and the like, and cannot be generally stated, but it is usually 20% or less, preferably 5 to 15 % Concentration is a rough guide. The polyvinyl alcohol of the present invention has a small migration at the time of drying and is effective at a relatively low adhesion amount, but the adhesion amount of polyvinyl alcohol is usually 1 to 20% by weight, preferably 5 to 15% by weight in terms of solid content. is there. If the adhered amount is small, sufficient morphological stability cannot be obtained, and if the adhered amount is large, it is difficult to sufficiently dissolve and remove, and it is uneconomical in terms of waste liquid treatment.
The drying conditions of the polyvinyl alcohol are not particularly limited, but it should be noted that if the polyvinyl alcohol is dried under a stronger condition than necessary, the polyvinyl alcohol is subjected to a dry heat treatment to lower the solubility and the dissolution removal may be insufficient.
【００１４】本発明で用いるポリビニルアルコールには
効果を損なわない範囲で変性されたものを用いても良
く、また、ポリビニルアルコール水溶液には必要に応じ
て増粘剤、消泡剤、繊維との親和性を改善する界面活性
剤等を添加しても良い。更にまた、澱粉やカルボキシメ
チルセルロースなどを添加併用することもできる。The polyvinyl alcohol used in the present invention may be modified in a range that does not impair the effect, and the polyvinyl alcohol aqueous solution may have a thickening agent, an antifoaming agent, or an affinity for fibers, if necessary. You may add surfactant etc. which improve property. Furthermore, starch, carboxymethyl cellulose, etc. may be added and used in combination.
【００１５】ポリビニルアルコールを付与して形態安定
化された不織布や編織物などの繊維集合体は、ポリウレ
タン等の高分子弾性体液を含浸、凝固する。含浸液の組
成や含浸方法、凝固条件等は従来公知の方法が採用でき
る。高分子弾性体を凝固した後高分子弾性体の溶剤を洗
浄除去した後または洗浄除去と同時にポリビニルアルコ
ールを溶解除去する。溶解除去温度は凝固した高分子弾
性体を損傷しない条件が選択され、通常60〜98℃の範囲
である。A fiber aggregate such as a non-woven fabric or a knitted fabric which has been morphologically stabilized by adding polyvinyl alcohol is impregnated with and solidified with a polymer elastic body liquid such as polyurethane. A conventionally known method can be adopted for the composition of the impregnating solution, the impregnation method, the coagulation conditions, and the like. After solidifying the elastic polymer, the solvent of the elastic polymer is removed by washing, or simultaneously with the removal by washing, the polyvinyl alcohol is dissolved and removed. The dissolution removal temperature is selected under the condition that the solidified elastic polymer is not damaged, and is usually in the range of 60 to 98 ° C.
【００１６】[0016]
【実施例】次に本発明の実施態様を具体的な実施例で説
明する。実施例中、％は断りのない限り重量に関するも
のである。なお、実施例中での評価は下記によった。ポ
リビニルアルコールのマイグレーション：乾燥後の繊維
シートの厚さ方向の断面にヨウ素のホウ酸水溶液を付与
しポリビニルアルコールを着色し50倍の実体顕微鏡で観
察した。青色に着色した部分の分布状態を４段階に評価
した。 ◎：全体が均一に染まっている。 ○：厚みの中心部がやや薄めであるが、全体がほぼ均一
に染まっている。 △：中心部と表層部で濃度の差がやや大きい。 ×：表層部が極めて濃く染まっている。EXAMPLES The embodiments of the present invention will be described with reference to specific examples. In the examples,% relates to weight unless otherwise specified. The evaluations in the examples are as follows. Migration of polyvinyl alcohol: An aqueous boric acid solution of iodine was applied to the cross section of the dried fiber sheet in the thickness direction, and the polyvinyl alcohol was colored, and observed with a stereoscopic microscope at a magnification of 50. The distribution state of the blue-colored portion was evaluated in four levels. A: The whole is dyed uniformly. ◯: The central part of the thickness is slightly thin, but the whole is dyed almost uniformly. Δ: The difference in concentration between the central part and the surface part is rather large. X: The surface layer is dyed extremely darkly.
【００１７】N,N'-ジメチルホルムアミド（ＤＭＦ）中
での形態保持性： ポリビニルアルコールにより仮固定
した不織布を巾2.5cmの短冊状に切り取り500ｇの荷重を
かけてＤＭＦ中に３分間浸漬後取り出し、浸漬前後での
寸法変化により次の４段階に評価した。 ◎：寸法変化が１％以下 ○：寸法変化が１〜５％ △：寸法変化が５〜10％ ×：寸法変化が10％以上Shape retention in N, N'-dimethylformamide (DMF): Nonwoven fabric temporarily fixed with polyvinyl alcohol is cut into strips with a width of 2.5 cm and immersed in DMF for 3 minutes under a load of 500 g, and then taken out. The following four grades were evaluated according to the dimensional change before and after immersion. ◎: Dimensional change is 1% or less ○: Dimensional change is 1 to 5% △: Dimensional change is 5 to 10% ×: Dimensional change is 10% or more
【００１８】ポリビニルアルコールの溶解除去性： ポ
リビニルアルコールを付与した不織布を90℃の温水中に
１時間浸漬後、絞液し乾燥した。処理前後での重量変化
より付着ポリビニルアルコールの除去率を求めた。Solubility and Removability of Polyvinyl Alcohol: A nonwoven fabric provided with polyvinyl alcohol was immersed in warm water at 90 ° C. for 1 hour, squeezed and dried. The removal rate of the attached polyvinyl alcohol was determined from the weight change before and after the treatment.
【００１９】風合い： ポリビニルアルコールで仮固定
した不織布にポリウレタン溶液を含浸、凝固し、熱水に
よりＰＶＡを溶解除去した繊維シート状物を触感により
次の４段階に評価した。 ◎：極めて柔軟である ○：柔軟である △：やや固い ×：極めて固いTexture: A nonwoven fabric temporarily fixed with polyvinyl alcohol was impregnated with a polyurethane solution, coagulated, and PVA was dissolved and removed by hot water. ◎: Extremely flexible ○: Flexible △: Slightly hard ×: Extremely hard
【００２０】実施例１ 溶融紡糸、延伸された２デニールのポリエチレンテレフ
タレート繊維を捲縮し、繊維長41mmにカットしてステー
プル繊維とし、カード、ウエッバーを経て得たウエブを
ニードルパンチを行い、熱水中で収縮処理し乾燥して平
均目付300ｇ／m2、密度0.25ｇ／cm3の繊維絡合不織布を
得た。Example 1 Melt-spun and drawn 2 denier polyethylene terephthalate fibers were crimped and cut into staple fibers having a fiber length of 41 mm, and the web obtained through cards and webbers was needle-punched to obtain hot water. Shrinkage treatment and drying were carried out to obtain a fiber-entangled nonwoven fabric having an average basis weight of 300 g / m 2 and a density of 0.25 g / cm 3 .
【００２１】次いで、重合度3300、ケン化度88モル％の
ポリビニルアルコールの５％水溶液に上記絡合不織布を
浸漬し絞液した。この不織布を熱風乾燥機で120℃、30
分、更に140℃で20分乾燥しポリビニルアルコールで仮
固定された不織布とした。このときのポリビニルアルコ
ール付着量は固形分で８％であった。この仮固定した不
織布の厚さ方向の断面にヨウ素のホウ酸水溶液を付与し
ポリビニルアルコールを着色し50倍の実体顕微鏡で観察
したところ、青色に着色した部分は断面上均一に分散し
ており、乾燥時のマイグレーションは認められなかっ
た。また、この仮固定した不織布からのポリビニルアル
コールの溶解除去率は95％と高く、ポリビニルアルコー
ル溶解除去後の不織布の風合いはポリビニルアルコール
付与前と同様に柔軟なものであった。Next, the above entangled nonwoven fabric was dipped in a 5% aqueous solution of polyvinyl alcohol having a polymerization degree of 3300 and a saponification degree of 88 mol% to squeeze the solution. This non-woven fabric is dried in a hot air dryer at 120 ° C for 30
Min, and further dried at 140 ° C. for 20 minutes to obtain a non-woven fabric temporarily fixed with polyvinyl alcohol. At this time, the amount of polyvinyl alcohol attached was 8% in terms of solid content. When a boric acid aqueous solution of iodine was applied to the cross section in the thickness direction of the temporarily fixed nonwoven fabric and the polyvinyl alcohol was colored and observed with a stereoscopic microscope of 50 times, the blue colored portion was uniformly dispersed on the cross section, No migration was observed during drying. In addition, the dissolution removal rate of polyvinyl alcohol from the temporarily fixed nonwoven fabric was as high as 95%, and the texture of the nonwoven fabric after the dissolution and removal of polyvinyl alcohol was as soft as before the application of polyvinyl alcohol.
【００２２】更に、ポリビニルアルコールで仮固定した
不織布にポリウレタン溶液を含浸、凝固して繊維集合体
中に高分子弾性体を含有する繊維シート状物に加工し
た。即ち、ポリウレタンの15％ＤＭＦ溶液に凝固調節剤
を添加した含浸液を上記不織布に含浸し、絞液した後Ｄ
ＭＦ水溶液中でポリウレタンを凝固させ、続いて90℃熱
水中に１時間浸漬しポリビニルアルコールを溶解除去し
た後絞液、乾燥した。ポリウレタン溶液含浸時のローラ
ープレスに対する形態安定性は良好であり、得られた繊
維シート状物の風合いは柔軟で優れており、表面状態も
シワの発生等もなく平滑性良好であった。Further, a non-woven fabric temporarily fixed with polyvinyl alcohol was impregnated with a polyurethane solution and coagulated to obtain a fibrous sheet containing a polymer elastic body in the fibrous aggregate. That is, the non-woven fabric was impregnated with an impregnating liquid obtained by adding a coagulation regulator to a 15% DMF solution of polyurethane, and after squeezing the liquid, D
Polyurethane was coagulated in an MF aqueous solution, then immersed in hot water at 90 ° C. for 1 hour to dissolve and remove polyvinyl alcohol, and then squeezed and dried. The morphological stability to the roller press when impregnated with the polyurethane solution was good, the texture of the obtained fibrous sheet-like product was soft and excellent, and the surface condition was smooth without wrinkles or the like.
【００２３】実施例２〜５、比較例１〜４ 実施例１の繊維絡合不織布を用い、表１に示すポリビニ
ルアルコールを用いて実施例１と同様にポリビニルアル
コール付与とポリウレタン溶液の含浸、凝固を行った。
結果を実施例１と共に表１に示す。Examples 2 to 5 and Comparative Examples 1 to 4 Using the fiber-entangled nonwoven fabric of Example 1, polyvinyl alcohol shown in Table 1 was used in the same manner as in Example 1 to apply polyvinyl alcohol, impregnate with a polyurethane solution, and coagulate. I went.
The results are shown in Table 1 together with Example 1.
【００２４】[0024]
【表１】 [Table 1]
【００２５】実施例２〜５はそれぞれ評価に僅かの違い
はあるもののいずれも良好であった。比較例１はポリビ
ニルアルコールの溶解除去性には優れているが、ＤＭＦ
中での形態保持効果が低く得られた繊維シート状物は表
面のシワが発生していた。比較例２においては比較例１
のポリビニルアルコール濃度を上げ付着量を増大させた
ところＤＭＦ中での形態保持効果は若干改善されたが、
乾燥時のポリビニルアルコールのマイグレーションが大
きく、得られた繊維シート状物の風合いはやや固めであ
った。In each of Examples 2 to 5, all evaluations were good although there were slight differences in evaluation. Comparative Example 1 is excellent in the ability to dissolve and remove polyvinyl alcohol, but DMF
The fibrous sheet obtained had a low shape retention effect, and wrinkles were generated on the surface. In Comparative Example 2, Comparative Example 1
When the concentration of polyvinyl alcohol was increased to increase the adhesion amount, the shape retention effect in DMF was slightly improved.
The migration of polyvinyl alcohol during drying was large, and the obtained fibrous sheet material had a slightly firm texture.
【００２６】比較例３においてはポリビニルアルコール
のケン化度の高いものを使用して比較例２と同様に付着
量を多くしたところ、ＤＭＦ中での形態保持効果の改善
は小さく、ポリビニルアルコールの溶解除去性が劣るた
め風合いが固く、表面にシワが発生した。また、比較例
４は重合度、ケン化度が共に高いポリビニルアルコール
を用いたところ、付着量が少なくてもＤＭＦ中での形態
保持効果が高く表面平滑な繊維シート状物が得られた
が、ポリビニルアルコールの溶解除去性が極めて悪く残
存するポリビニルアルコールのため、風合いは極めて固
いものであった。In Comparative Example 3, when polyvinyl alcohol having a high degree of saponification was used to increase the amount of adhesion in the same manner as in Comparative Example 2, the improvement in the shape retention effect in DMF was small, and the dissolution of polyvinyl alcohol. Since the removability was poor, the texture was hard and wrinkles occurred on the surface. Further, in Comparative Example 4, when polyvinyl alcohol having both a high degree of polymerization and a high degree of saponification was used, a fiber sheet-like article having a high morphological retention effect in DMF and a smooth surface was obtained even with a small amount of adhesion. The dissolution and removal properties of polyvinyl alcohol were extremely poor, and the remaining polyvinyl alcohol had a very hard texture.
【００２７】[0027]
【発明の効果】本発明の方法によれば、繊維集合体の仮
固定用のポリビニルアルコールの付着量を少なくしても
高分子弾性体の含浸、凝固時の形態保持効果が高く、か
つ溶解除去が容易であり風合いの柔軟な繊維シート状物
を製造することができる。更に、ポリビニルアルコール
の使用量が少ないため、排水処理のコストも低減でき
る。EFFECTS OF THE INVENTION According to the method of the present invention, even if the amount of polyvinyl alcohol for temporarily fixing the fiber assembly is reduced, the effect of impregnating the polymer elastic material and the shape-retaining effect at the time of solidification are high, and the solution is removed. A flexible fibrous sheet material that is easy and has a good texture can be produced. Furthermore, since the amount of polyvinyl alcohol used is small, the cost of wastewater treatment can be reduced.
Claims (1)
固定し高分子弾性体を含浸し凝固した後に該水溶性高分
子を溶解除去する繊維シート状物の製造方法において、
該水溶性高分子として重合度2000以上、ケン化度80モル
％以上97％以下のポリビニルアルコールを用いることを
特徴とする繊維シート状物の製造方法。Claim: What is claimed is: 1. A fibrous sheet material in which a water-soluble polymer is applied to a fiber assembly, temporarily fixed, impregnated with a polymer elastic material, coagulated, and then the water-soluble polymer is dissolved and removed. In the manufacturing method,
A method for producing a fibrous sheet, which comprises using polyvinyl alcohol having a degree of polymerization of 2000 or more and a degree of saponification of 80 mol% or more and 97% or less as the water-soluble polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20756191A JP2980261B2 (en) | 1991-07-23 | 1991-07-23 | Method for producing fiber sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20756191A JP2980261B2 (en) | 1991-07-23 | 1991-07-23 | Method for producing fiber sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0533256A true JPH0533256A (en) | 1993-02-09 |
| JP2980261B2 JP2980261B2 (en) | 1999-11-22 |
Family
ID=16541781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20756191A Expired - Fee Related JP2980261B2 (en) | 1991-07-23 | 1991-07-23 | Method for producing fiber sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2980261B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002030577A (en) * | 2000-05-10 | 2002-01-31 | Toray Ind Inc | Method for producing leathery sheet-like product |
| KR100378762B1 (en) * | 2001-11-13 | 2003-04-03 | Haco Co Ltd | Non-woven fabric used in synthetic leather and artificial leather, method for manufacturing the same, and synthetic leather and artificial leather using the same |
| US6921508B2 (en) * | 2001-03-12 | 2005-07-26 | Alcantara S.P.A. | Method for the production of microfibrous suede-finish non-woven fabric without using organic solvents |
| KR100542506B1 (en) * | 2004-04-07 | 2006-01-11 | 에이치디씨 주식회사 | Artificial polyurethane leather having high elasticity in four directions and method for preparing thereof |
| WO2014084253A1 (en) * | 2012-11-30 | 2014-06-05 | 東レ株式会社 | Sheet-shaped object and process for producing said sheet-shaped object |
| EP2896741A1 (en) * | 2012-09-14 | 2015-07-22 | Toray Industries, Inc. | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
-
1991
- 1991-07-23 JP JP20756191A patent/JP2980261B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002030577A (en) * | 2000-05-10 | 2002-01-31 | Toray Ind Inc | Method for producing leathery sheet-like product |
| JP4644971B2 (en) * | 2000-05-10 | 2011-03-09 | 東レ株式会社 | Method for producing leather-like sheet |
| US6921508B2 (en) * | 2001-03-12 | 2005-07-26 | Alcantara S.P.A. | Method for the production of microfibrous suede-finish non-woven fabric without using organic solvents |
| KR100378762B1 (en) * | 2001-11-13 | 2003-04-03 | Haco Co Ltd | Non-woven fabric used in synthetic leather and artificial leather, method for manufacturing the same, and synthetic leather and artificial leather using the same |
| KR100542506B1 (en) * | 2004-04-07 | 2006-01-11 | 에이치디씨 주식회사 | Artificial polyurethane leather having high elasticity in four directions and method for preparing thereof |
| EP2896741A1 (en) * | 2012-09-14 | 2015-07-22 | Toray Industries, Inc. | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| EP2896741A4 (en) * | 2012-09-14 | 2016-06-08 | Toray Industries | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| US10301770B2 (en) | 2012-09-14 | 2019-05-28 | Toray Industries, Inc. | Process for producing sheet-shaped material and sheet-shaped material obtained by said process |
| WO2014084253A1 (en) * | 2012-11-30 | 2014-06-05 | 東レ株式会社 | Sheet-shaped object and process for producing said sheet-shaped object |
| CN104838063A (en) * | 2012-11-30 | 2015-08-12 | 东丽株式会社 | Sheet-shaped object and process for producing the sheet-shaped object |
| US20150315741A1 (en) * | 2012-11-30 | 2015-11-05 | Toray Industries, Inc. | Sheet-shaped material and process for producing said sheet-shaped material (as amended) |
| EP2927368A4 (en) * | 2012-11-30 | 2016-06-29 | Toray Industries | Sheet-shaped object and process for producing said sheet-shaped object |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2980261B2 (en) | 1999-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3067482A (en) | Sheet material and process of making same | |
| US3869310A (en) | Flexible sheet materials | |
| JPH0533256A (en) | Production of fibrous sheet-like material | |
| KR100804042B1 (en) | Artificial leather with excellent abrasion property and method of manufacturing the same | |
| JPH0742652B2 (en) | Method for producing flexible leather-like sheet | |
| JPH0655999B2 (en) | Method for producing suede-like artificial leather | |
| JP3378153B2 (en) | Manufacturing method of artificial leather | |
| US3536639A (en) | Method for producing vapor permeable polyurethane fibers | |
| JP2002249988A (en) | Method for producing leather-like sheetlike material | |
| US3483283A (en) | Process for production of sheet materials | |
| JPH101881A (en) | Leather-like sheet having silver face and its production | |
| JPH0112848B2 (en) | ||
| JP3361967B2 (en) | Non-woven fabric and artificial leather made of it | |
| JP2002317386A (en) | Method for producing leathery sheet | |
| US2863715A (en) | Wiping cloth and the manufacture thereof | |
| JPS61160487A (en) | Production of synthetic leather | |
| JPH0457970A (en) | Moisture-permeable waterproofing of textile goods | |
| JP2016069760A (en) | Artificial leather substrate and method for producing artificial leather substrate | |
| JP3874927B2 (en) | Resin composite tube and manufacturing method | |
| KR100231325B1 (en) | Method for producing artificial leather | |
| JP2002242083A (en) | Method for producing artificial leather | |
| JPH0262313B2 (en) | ||
| JPH0192482A (en) | Production of soft leather like sheet article | |
| JP3805525B2 (en) | Method for producing resin-coated sheet | |
| JPS62264B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |